222163537 has 4 divisors (see below), whose sum is σ = 224129700. Its totient is φ = 220197376.

The previous prime is 222163511. The next prime is 222163547. The reversal of 222163537 is 735361222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100480576 + 121682961 = 10024^2 + 11031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222163537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222163499 and 222163508.

It is not an unprimeable number, because it can be changed into a prime (222163507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982912 + ... + 983137.

It is an arithmetic number, because the mean of its divisors is an integer number (56032425).

Almost surely, 2^222163537 is an apocalyptic number.

It is an amenable number.

222163537 is a deficient number, since it is larger than the sum of its proper divisors (1966163).

222163537 is a wasteful number, since it uses less digits than its factorization.

222163537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966162.

The product of its digits is 15120, while the sum is 31.

The square root of 222163537 is about 14905.1513578360. The cubic root of 222163537 is about 605.6535405202.

The spelling of 222163537 in words is "two hundred twenty-two million, one hundred sixty-three thousand, five hundred thirty-seven".